[Driver] Add unit tests for GnuLdDriver.

llvm-svn: 182980

1 files changed, 59 insertions, 0 deletions

diff --git a/lld/unittests/DriverTests/DriverTest.h b/lld/unittests/DriverTests/DriverTest.h
new file mode 100644
index 00000000000..6538c1b429d
--- /dev/null
+++ b/lld/unittests/DriverTests/DriverTest.h
@@ -0,0 +1,59 @@
+//===- lld/unittest/DriverTest.h ------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include <stdarg.h>
+
+#include "gtest/gtest.h"
+
+#include "lld/Driver/Driver.h"
+#include "lld/Driver/LinkerInput.h"
+
+#include "llvm/Support/raw_ostream.h"
+
+namespace {
+
+using namespace llvm;
+using namespace lld;
+
+template<typename Driver, typename TargetInfo>
+class ParserTest : public testing::Test {
+protected:
+  void SetUp() {
+    os.reset(new raw_string_ostream(diags));
+  }
+
+  virtual TargetInfo *doParse(int argc, const char **argv,
+                              raw_ostream &diag) = 0;
+
+  void parse(const char *args, ...) {
+    // Construct command line options from varargs.
+    std::vector<const char *> vec;
+    vec.push_back(args);
+    va_list ap;
+    va_start(ap, args);
+    while (const char *arg = va_arg(ap, const char *))
+      vec.push_back(arg);
+    va_end(ap);
+
+    // Call the parser.
+    info.reset(doParse(vec.size(), &vec[0], *os));
+
+    // Copy the output file name for the sake of convenience.
+    if (info)
+      for (const LinkerInput &input : info->inputFiles())
+        inputFiles.push_back(input.getPath().str());
+  }
+
+  std::unique_ptr<TargetInfo> info;
+  std::string diags;
+  std::unique_ptr<raw_string_ostream> os;
+  std::vector<std::string> inputFiles;
+};
+
+}